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0; H1. MIL ER, Jr. GURTAIN FIXTURE. 'No.. 293,"188, Patented Feb. 5, 1884.

1 39.]. J"? a f A MM'MMHHW view of the end plate. Fig.

, Nrrn STAT S ATENT Enron.

CHARLES H. MILLER, Jn, or BUFFALO, NEW YORK, ASsIGNOR ro THE BUFFALO cUEr In FIXTURE .ooMrANY, or SAME rLAoE.

CURTAIN-FIXTURE.

SPECIFICATION formingpait of Letters Patent No. 293,188, dated February 5, 1884.

' Application filed liar-ch 6, 1877. Iienewed March 31, 1879.

To aZZ whom it may concern:

Be it known that I, CHARLES H. MILLER, J12, of the city of Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Curtain-Fixtures, which improvements are fully set forth in the following specification, reference being had to the accompanying drawings.

My invention relates to that class of curtainfixtures which are employed with curtain-rollers provided with a spring for winding up the curtain, and which are generally so constructed that the movement of the curtain-roller will be unrestricted when the curtain is permitted to be wound up with considerable speed, while the movement of the curtain-roller is stopped automati callywhen the curtain is raised slowly.

My invention relates more particularly to the construction of the device for locking the curtain-roller, and its nature will be fully understood from the following description.

In the accompanying drawings, Figure 1 is a longitudinal section of a curtain-roller proyided with my improvements. Fig. 2 is an end View of the catch-plate, with one of the catches engaged. Fig. 3 is a similar view with both, of the catches disengaged.

5'is a horizontal section thereof.

Like letters of reference refer to like in each of the figures.

A represents the curtain roller provided with a longitudinal bore or cavity, in whichis arranged the spring b.

I G is a bar or rod, arranged axiallywithin the bore of the curtain-roller, to which latter parts it is secured at the inner end.

D is a plate, arranged within'the bore of the curtain-roller, near its outer end, and provided on its outer side with a shank, (I, having its protruding end flattened on one side, as shown in Figs. 2, 3, and 5, and engaging in a correspondingly-shaped opening in' the bracket E. The plate 1) is provided on its inner side with a socket, in which the end of the bar 0 turns when the roller A is rotated. V

F represents the catch-plate, arranged at the open end of the curtain-roller, and provided with a central opening, through which passes Fig. 4is a rear the shank d. The plate F is provided or. is outer sideor face with two parallel guide bars or ribs, ff, arranged on opposite sides of the shank cl.

g 9 represent two catches, arranged between the guide-bars ff on opposite sides of the fiattened shank d, so as to be capable of sliding towardand from the shank. The inner ends of the catches g are formed with curved or com cave faces, adapted to rest upon the round face of the shank d, and with lips or shoulders on opposite sides of a centralline, to engage between the flattened side of the shank and each of the ribs f, as clearly shown at Fig. 2.

The catch-plate F is provided 011 its rear side with several small projections or pins, '5, entering corresponding cavities in the annular end of the curtain-roller, so as to cause the plate F to revolve with the latter. The plate F is secured in place on the curtain-roller, and the catches g g confinedby a ferrule or sleeve, G, placed over the plate and the end of the curtain-roller, as clearly shown in Fig. 1. The opposite end of the curtain-roller is provided with a plate and journal, H, in the ordinary manner.

The spring bis secured at one end to the plate D, the coils surrounding the central rod or core, 0, and the other end of the spring passes out through a slot or opening in the roller, andis secured in place, as clearly shown in Fig. 1. The spring b being wound up and the roller supported in the brackets, the curtain, when released, is raised by the force of the spring. When the curtainroller revolves rapidly in raising or lowering the curtain, the stops 9 g are thrown against the surrounding sleeve G by the centrifugal force, and thereby kept out of engagement with the flattened shank d. Upon allowing the curtain to rise slowly, one of the stops 9 will by gravity drop down and engage with its projecting lip against the flat side of the shank d, as shown in Fig. 2, thereby preventing the further rotation of the curtain-roller and securely locking the same in position. Upon drawing the curtain downward the stop engaged with the flattened shank is forced out of engagement therewith by the concave portion of the stop riding upon the round portion of the shank, when the cnrsliding catches, g, provided on the inner side 15' tain-is free to beraised or lowered, as may be with a concave portion and projecting lip, as desired. and for the purpose shown and described.

The parts of my improved device for lock- 2. The combination, with a spring curtain-- 5 ing the curtain-roller in position are each roller having-a flattened shank, d, of the plate readily cast of suitable metal and the whole F, provided with parallel guide-bars f f, and 20 secured together Without any screws or rivets. one or more sliding catches, 9, provided on I do not claim a-cnrtain-roller having the theirinner sideWithaconcaveportion and probar 0 secured to or made in one piece with the jecting lip, substantially as and for the pur- 10 roller A; but pose hereinbefore set forth.

What I claim as my invention, and desire CHARLES H. MILLER, JR. to secure by Letters Patent, islVitnesses:

1. The combination, with a spring curtain- EDWARD WILHELM,

roller having flattened shank d, of one or more GEQRGE H. SYKEs. 

